Tongue-truck.



c. A, A. RAND. TGNGUB TRUCK.

APPLIGATION FILED NOV. 8, 1907.

Patented May 11, 1909 (Uf [Tasses 72g y f A2 oy UNITED VSTATES PATENT'oFF-ion.

CHARLES A. A. RAND, OF CHICAGO, ILLINOIS.

` y Specieetionro! LettersPetent.

Patented May 1 1, 1909.

. ppncnlon nico November s, i907. 'serial no. 401.1217.`

To all wliom 'it may concern:

-Be it known thatll," (,inrnnifis A, A.. RAND.,v

`tion, vone in which thesingle axle is retained and e'trailing efeet'othe wheels is'secu'red. .,ltel'e'rring4 t0 theaccompenyinv 'dreveings--Figu're 1 represents a side c evation .and -pai'tialjseotion ofe-tonguetruok er.- `bodying my inventiony- Big, 2- is-a plan vi'evsi'ofscineywith the stubtongu'e end e porbeing 4'showin iii-.their normalworking position. AFigz''represents a sifililerplanview'- but withthetnickzaxle and pole' tongue in ppsitionsjtheyhoeupy when turning;andV 4 I in affra'gm'entary detail plan section, ta enras indicated bthe line 4-4 in Fig.' 1

, beeriaof -the stu [tongue with the' truck-eide;

the. sweraljgure's and .throughout the 35,

arte.: f, stub tongue '(on'ly xi portion thereof .b f hwn), which thetruck supports, is de signa'tedb :the numerati` 1, and it is'to be"'undestO0d-t 'at this inay be either the etui)` ."jtonguejfeti ordinaryharvester, the frame 4 secured a downwardly projectingstanderd 2,consisting 'o f the verticellyextending portion 3 andthe forwardlyextending portion '4, the latter brtion'teriinatin at its forward endVrit) in the' eli-5 The Vsten 'xml2 in efl'eetcon 'jstitutes a portiono--tlie stubton nel end is werd1 lendupirnirdly rojectingerin 7,` ri-idly gefl'ltosaid' eidg, end in this arr-.1 is

tongue trucks for' 4similar agricultural.implei'nents re uijngaereb'ythe truck axle, in turn herobjeet in view is to provide a. truck:siinplein construction, effective in its opere#v 4causing correspondingdeflections orthe tongue or ,twisting the stub tongue.. he

lloried a socket 8 laterally disposed with res ect to the exlc f or thereception of the ha 5 on the lower end of the standard 2.

rlhe socket 8 is 'formed in the iii-m 7 e slight distance in advance ofthe longitudinal axis of the axle' 6, so that a trailing effect is'gi-ven to said uxle and spportingy'vheels 9 journaled. on the endsthereof. This erm 7 may be regarded as a forwardly projecting arm, or unarm which projects leteriillywith repeet tothe longitudinal a'xis of theaxle.

On the foi-wordend of the Verin 7 isfleicibly 'pivoted the pole tongue10, only e portion `thereof being shown, While the rear end o said 'poletongue is fulcrumed- 'on the standerd 2 oithe stub touffue. The joint,or or# ticulntion, between-the pole ton ue 1 0 and. arm 7 is eieotedbyiin'eens of the all-headed bolt 11,' whicl'i isreceivedlby.e'soeket12. on the forward 'end of lsnid erml A slot'13 in the'soelcet 12permits oi' tipping 'movement laterally 4bet}`veen these parts lendermite also 4oi' a i i'votel in ovenfient. of te "pole `tongiieon t earm 7.: s Likewise the 'ball 5 on the standard 2, bearing in' the socket8, will 'pennit of movement not only about e ver- -tical, ivotnlaxis,but in'other directions es well; encethere ieproifid'edinflexible,lpivotal bearing between the axle and stub tongue, and n lso'betweenthefexle anni and pole tongu'cr ,'lo'the under side of the rearend. of the pole ton I c 10-is bolted e plate 1 4 which is provider atits reerl end, with a longitudi-V nelly extending slot 15. This slotenga res the vertical portion 3 olthe standrd 2, t ie` .stende'rd thusforming the` f ulcrnin -for Athe pole tonguow, and, as said ton ue'isdelooted laterally it will turn thee e about' its. bpivotal bearing withthe stu-h'tongue.'

'lhe roar ond oi' the'slot' l 5 terminates in two lateral shall owextensions 16 jthu's l renderf Ling the, slot, aty this point,considerably larger thanthe 'ste'.i ofthe standard 3 passingtherethrough, and hence' errizitt'ing of slighty v'vertical deflections'of t ie axle ljwithoiit o e plate 14 thusV forms a` pivotal'benring'w'ith tlietandard 2-of the stub tongue, and the pivotal pointis` constantly verying; es the tongue is de'lect'ed bythe tongue slidingvreerw'iirdl as well as '.turning, ns clearly s hownin iig. ,y y

For brevity, the pivotal bearing between the pole tongue 10 and standardl of the stub tongue, will be designated by 1l, the pivotal hearingbetween the tiuch axle and standard of the stub tongue formed by thehall 5 on the lower end ol said standard and the socket 8 will bcdesignated by B, and thebearing between the pole` tongue and aim 7 ofthe axle by U. Pls the lever arci l'oi'nled by the rear end ol' the poletongue between the pivotal boaringsA and (j is greater than the distancebetween the pivotal beariii .s B and C, it l'ollows thatthe truck axle 6wi lhave a greater angular delleetion in tui'nin of the tongue than willthe tongue ilse l'. The bea ring B between thc stub tongue and truckaxle is placed slightly forward of said' axle, thus` securing a trailingeffect of the Atruck and rendering it easier to guideA This bear-l ingpoint ll, however, should lio comparab tively near the longitudinalaxis' of the axle 6 toprevent skidding ol' the wheels as 'much aspossible when turning. -',i.'u,procure,the'best results the bearing llshould lie nearer the axle than does the 1i votal bearing C betweenthcaxle arm and tlic pole to igue'.V

In turnin the truck axle l'i'oin the position shown in liig. 2 to thatshown in -Fig. 3, theI stein 3 ol the standard 2 is in ade to ap n' achthe forward end of the slot 15 in sii-iti lilete, and it is evident that`on ,reaching the forward end of thcslot further inoven-ent ol' theaxle` will be arrested. 'lh'e extenteol such move nient forwardly of thestein in thc slot is determined by means of the adjustable stop 1.7which is secured to thc reni' endof the pole tongue by means of thebolts 1S, 'the slot 19 in said stop permitting of such ad- 'ustinc'nt'l'he function of this stop is to iinit the extent ol'tlufnngular,dellcctionol the truck axle, such linait being at a point`where the longitudinal axis of the axle. would if extended, intersect avertical line passiii through the contact ointwith the groinugl of themain sup orting wheel ol' the harvester; `When t is stop contacts withthe stein 3 the pole tongue 10 will be held in that,

, position rigidly, and the 'axle 6, in fuither turning the machine,will thus Joint Idirect to the pivotal point on which t ie. cnt-ireniachine turns, which 'is the correct anglel'or the truck axle,-as iswell un'denitood. In ,Fi 3 the stop 17 is shown in `full lines in theorward limit oi' its movement, andi in dotted lines is shown in aposition which will arrest lfurtlier turning of the poletongue or axleand cause the turning action to take place with the axle at this angle.U I' lt will be seen that in ile-fleeting the pole tongue, either thelever arm between the bearings A and B or the lever ai'ni between the.hearings l and or that between ."i and C, must vary in, length.'l'heconstruction shown provides for varying the len rth of the level'arm forireil on th(` rear cnd o thel pole tongue |utvuwnQthc bmiringsand C, Isurh means ronsistiiw in the slotted plate' 14.

ing, pivotal connection at the bearing A, a

sliding bearing could equally as well be prol vided lor either at B orC,- aiid it is also obvious that instead of a slotted connection,l asshown, links, sectors or gears, external or internal, or otherequivalent devices :n.i ht be employed, which would co. \.pensate or thechau e in length in one of the arms.

What elai-.i as nay invention, and (lenire to secure by Letters Patent,is:

1. ln ro izhiiiaton with the stub tongue of a'. harvester or like iraeh'ine, a truck axle having a pivotal connection with the forward endol' the stub tongue, -an aroiprojecting laterally with respect to the.longitudinal axis of said axle, a po etonguc pivo'tally eonnect-` ingwith the stub tongue and ,projecting lorwardly therefrom, said poletongue alsopivotully connecting with said laterally projecting ar. n onthe axle, one ol' said pivotal connections peroitting of a variation ofthe distance between it and the otherpivotal connections when the poletongue is deflected horizontally.

2. ln cofnbination with the stubztngue ol' a harvester or like machine,a truck axle having, a pivotal connection with the 'forward end of thestub tongue, an"arin^projec ting laterally .vith'rrs )ect to thelongitudinal axis of said axle, a pole tongue pivotelly connecting withthe stub tongue and projecting for# wardly tlieiel'rom, said pole tonguealsopivotally connecting with said laterally projecting aria on theaxle, that portion of the pole' tongue which lies between its ivotalconnection with 'said laterally progect'in arm and said stub tonguebeing of a greater ellgth thanv the distance between the connection withthe laterally proectng arm andthe vertical plane passing t noughthe lonitudinal axis ol said truck axle, one of sai pivotal connectionsiwrnittin'g of a variation of the distance between it and the other'pivotal connection when the pole tongue is ,deflectedA horizontally. 3.In combination with the stub tongue of a harvester or like machine, atongue truck comprising an axle uponv `which said stubV tongue isflexibly supported wheels journaled on the. ends` ol the axle,and azpoletongue' fulcruincd on the stub tongue and provided with a flexibleconnection withthe 'axle, the said connection with the axle boing'- at apoint farther from thel longitudinal axis thereof 'than is the flexiblebearing between said. axle and the stub tongue.

4. In combination with the stub tongue of a liaivestcr or like machine,a tongue truckcomprising an axle, wheels ioumaled on the endstl'iereol,a foiwardly'piojeetinarm se rured rigidly to the axle the said stu huvinY a flexible pivotal slightly l'oiward of said axle, and a pole tonguehaving a flexible pivotal bearing on ies tongue. bearing on said arm aharvester or like machine;f

the forward end of said arm and a horizontally sliding connection withsaid stub ton ue.

5. yIn combination, a stub tongue of a arvester .orlike machine, adownwardly projecting standard fixed to the forward end thereof an axle,supporting wheels jou rnaled on the ends thereof, a forwardly projectingarm secured rigidl to said axle and articuf lating at a point slightlyforward of said axle with the lower en .of the standard,y and a poletongue having a flexible pivotal connection with the forward end' oi'said arm and a sliling'pivotal connection with said standar -6. Incombination with the stub tongue of a tongue truck comprising an axle uon which said stub tongue has a pivotal caring, 'wheels journaled on theends, oi said axle, a pole tongue ed 'fulcrumed on the Astub tongue andprovi with a pivotal connection with said axle, and an adjustable stoto'linzit the extent of anlar'deection o the poletongue relative to thestub ton e.V v. f

7. In conlination withthe stub tongue of a harvester or like machine, atongue truck comprising an axle u on which said stub tongue has apivotal caring, wheels journaled on the ends of said axle, a ole tonguehaving aflexibleconnection wit said axle and a slidingpivotal connectionwith said stub tongue, and an adjustable stop fixed on the pole tonguefor li siting the sliding nievement between the pole and stub tongues.

8. In combination, a stub tongue of a harvester or like machine, adownwardly projecti standard fixed to the forward end thereo 'andconsisting of a vertically and a forwardly extending portion, an axlehaving supporting wheels journaled on the ends thereof, a forwardlyprojecting arm secured rigidly to said axle and articulating with the afiexibledpivotal bearm `end of sai end ofthe forwardly projectingportion of said standard, a ole tongue, and a longitudinally slotted pate secured rigidly to the rear end thereof, the said pole ton with t eforwar arm and a sli in plvotal bearing with the vertical portion o saidstandard. 9. In combination, a stub tongue of a harvester er likemachine, a downwardly projectin standard fixed to the forward end theref and consisting of a vertically and a forwardly extending portion, an'axle having supporting wheels journaled on the ends thereof, a forwardlyprojecting arm secured rigidly to 'said axle andarticulating with theend of the forwardly-projecting portion o f ble pivotal bearing said armand a longitudinally slotted plate fixed to Aand projecting rearwardfrom said pole tongue andengaging with the slot thereof thevertlcalportion of said standard, the `slot in said plate terminating atits rear end in'shallow, ateral extensions, which permit of a slightangular movement of the truck -said standard, a ole tongue having ailexi- P with the forward end of axle without a corresponding movementof the pole tongue.

10. In combination with the stub -tongue of a harvester -or likemachine, a tongue truck comprising an axle -u on stub ton ue has apivotal eari journale( on the ends of said ax e,'a pole tongue fulcrumedon the stub tongue and provided with a pivotal connection with saidaxle, and a stop for limitingl the extent of angular deflection of thep0 e tongue relative to the stub tongue.

CHARLES A. A. RAND.`

Witnesses:

J. C. WARNES, F. W. Hor-manieren.

which said wheels

